Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

The sign at the garden gate reads: "These Plants Can Kill."

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

The collection is exhibited in a Staten Island building modeled on traditional Himalayan architecture.

There must be a pun in this haystack somewhere...

This sculpture by artist Fritz Keonig survived the 9/11 attacks and now stands as a monument to the victims.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

A popular European tradition makes its way to the states on one of America's most famous bridges.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

This whimsical group of statues is a favorite of children who love to climb all over Lewis Carroll's beloved characters.

Elevated freight railway turned wildly successful urban park.

These former Nazi anti-aircraft towers offer a singular view of the north of Berlin in the summer, and a sanctuary for bats in winter.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

Where once there was a train station bathroom, there is now this German burger joint.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

The most visited, and possibly most controversial, museum in Germany.

The handiwork of a underdog clockmaker who solved an impossible problem for an Empire, and forever revolutionized seafaring.

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

The first tunnel to be dug beneath a river, repurposed as an art and museum space.

Charles Babbage's proto-computer, painstakingly brought to life.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.